Electrophysiological studies of the fundus and optic nerve To diagnose fundus diseases: ERG, PERG, multifocal ERG, VEP, EOG Doctors Mari Levin Ophthalmologist - Chief Physician Eye Clinic, Centre of Eye Surgery Kristel Pulges Ophthalmologist - Chief Physician Eye Clinic, Centre of Eye Surgery Nurses Varje Pihelgas Nurse Eye Clinic, Centre of Ophthalmology